Yes Sun 9985 (it is HDS NSC55 actually) is true active-active array, but it doesn't matter as VMware round-robin PSP works with any storage type.
Since you have active-active storage you really should consider procuring PowerPath/VE, it is supported with 3rd party active-active arrays, we are using it with 9985 and performance increase over round-robin PSP is quite awesome. Even without performance increase it would be very good purchase because with PowerPath/VE SAN and Storage port load is truly balanced evenly, which VMware PSP does not guarantee.
Tomi
http://v-reality.info
